A butterfly valve is a valve which can be used for isolating or regulating flow&period; The closing mechanism takes the form of a disk&period; Operation is similar to that of a ball valve&comma; which allows for quick shut off&period;Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight&comma; meaning less support is required&period;

The disc is positioned in the center of the pipe&comma; passing through the disc is a rod connected to an actuator on the outside of the valve&period;

Rotating the actuator turns the disc either parallel or perpendicular to the flow&period;Unlike a ball valve&comma; the disc is always present within the flow&comma; therefore a pressure drop is always induced in the flow&comma; regardless of valve position&period;

---STANDARD---

Standard

GB Series

API Series

Design

GB&sol;T 12237

API 6D

API 609-83

Flange Connection Length

GB&sol;T 12221

API 6D

ANSI B16&period;10

Welding Connection Length

GB&sol;T 15188&period;1

API 6D

ANSI B16&period;10

Flange

GB&sol;T9113&comma; JB&sol;T79

ANSI B16&period;5

Welding

GB&sol;T 12224

ANSI B16&period;25

Testing and Inspection

GB&sol;T 9092

API 6D

API 1598

---STRUCTURE AND MATERIAL---

No&period;

Material

1

Body

ASTM A216 WCB

ASTM A351 CF8

ASTM A351 CF3

ASTM A351 CF8M

2

Pin

ASTM A29-1035&sol;A276 304

ASTM A276 304

ASTM A276 304L

ASTM A276 316

3

Disc

WCB&sol;CF8&sol;CF8M

ASTM A351 CF8

ASTM A351 CF3

ASTM A351 CF8M

4

Seal Ring

304&sol;316&plus;Graphite&sol;PTFE

304&plus;Graphite&sol;PTFE

304L&plus;Graphite&sol;PTFE

316&plus;Graphite&sol;PTFE

5

Retainer Flange

A105&sol;A182&sol;F304&sol;F316

A182 F304

A182 F304L

A182 F316

6

Bolt

B7&sol;B8&sol;B8M

B8

B8

B8M

7

Bolt

B7

B8

B8

B8M

8

Cover

A105

A182 F304

A182 F304L

A182 F316

9

Gasket

Graphite

Graphite

Graphite

Graphite

10

Bushing

304 &plus; Nitriding

304 &plus; Nitriding

304L &plus; Nitriding

316 &plus; Nitriding

11

Bushing

304 &plus; Nitriding

304 &plus; Nitriding

304L &plus; Nitriding

316 &plus; Nitriding

12

Packing Seat

A105&sol;304

304

304L

316

13

Packing

Graphite

Graphite

Graphite

Graphite

14

Bolt

A193 B7

A193 B8

A193 B8

A193 B8M

15

Gland Flange

WCB

CF8

CF3

CF8M

16

Nut

A194 2H

A194 8

A194 8

A194 8M

17

Bolt

A193 B7

A193 B8

A193 B8

A193 B8M

18

Yoke

WCB

WCB

WCB

WCB

---BASIC DESIGN---

Nominal Pressue&lpar;MPa&rpar;

Test Pressure &lpar;MPa&rpar;

Class&lpar;Lb&rpar;

Test Pressure &lpar;MPa&rpar;

Body

High Pressure Sealing Test

Air Pressure Sealing Test

Body

High Pressure Sealing Test

Air Pressure Sealing Test

1&period;6

2&period;4

1&period;76

0&period;6

CLASS 150

2&period;94

2&period;1

0&period;6

2&period;5

3&period;75

2&period;75

CLASS 300

7&period;67

5&period;62

4&period;0

6&period;0

4&period;4

CLASS 600

15&period;3

11&period;23

ApplicableSpecification

Length dimension

GB12221 ANSI B16&period;10

Flange dimension

JB79-59 GB9113 HG20592-97 ANSI B16&period;5

Welding standard

GB12224-89 ANSI B16&period;25

Teat and inspection

JB&sol;T 9092-99 API 598

Operating Mode

Applicable mediums

Natural gas&comma;liquefied gas&comma;petroleum and other medium

Applicable Temperature

-28~<150ºC

Driving manner

Worm gear&comma; pneumatic operated&comma; electric actuator

---TRIPLE ECCENTRIC DESIGN---

OFFSET-1

The shaft is offset behind the seat axis to allow complete sealing around the entire seat&period;

OFFSET-2

The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve&period;

OFFSET-3

The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat&period;

ADVANCED

Seat is Cr13 Metal Alloy or hardfaced with stellite as standard&period;

The gasket is spiral wound SS&sol;Graphite for 0 leakage&period;

Seat ring forces are generated by the torque during closing uniformly around the entire circumference&period;

---SIZE &lpar;150Lb&rpar;---

PRESSURE

DIA

INCH

L-A

L-B

D1

D2

Z-Φd

D0

H1

PN6

40

1-1&sol;2"

33

33

100

80

4-Φ14

140

76

50

2"

43

43

110

90

4-Φ14

140

85

65

2-1&sol;2"

46

46

130

110

4-Φ14

160

95

80

3"

46

64

150

125

4-Φ18

160

110

100

4"

56

64

170

145

4-Φ18

180

122

125

5"

64

70

200

175

8-Φ18

180

138

150

6"

70

76

225

200

8-Φ18

230

158

200

8"

71

89

280

255

8-Φ18

230

188

250

10"

76

114

335

310

12-Φ18

280

224

300

12"

83

114

395

362

12-Φ23

310

254

350

14"

92

127

445

412

12-Φ23

310

288

400

16"

102

140

495

462

16-Φ23

310

320

450

18"

114

152

550

518

16-Φ23

380

350

500

20"

127

152

600

568

20-Φ23

380

388

600

24"

154

178

705

670

20-Φ25

450

440

700

28"

165

229

810

775

24-Φ25

450

488

800

32"

190

241

920

880

24-Φ30

450

572

900

36"

203

241

1020

980

24-Φ30

560

628

1000

40"

216

300

1120

1080

28-Φ30

560

698

1200

48"

254

360

1340

1295

32-Φ34

560

810

1400

56"

279

390

1560

1510

36-Φ34

600

940

PRESSURE

DIA

INCH

L-A

L-B

D1

D2

Z-Φd

D0

H1

PN10

40

1-1&sol;2"

33

33

110

85

4-Φ18

140

76

50

2"

43

43

125

100

4-Φ18

140

85

65

2-1&sol;2"

46

46

145

120

4-Φ18

160

95

80

3"

46

64

160

135

4-Φ18

160

110

100

4"

56

64

180

155

8-Φ18

180

122

125

5"

64

70

210

185

8-Φ18

180

138

150

6"

70

76

240

210

8-Φ23

230

158

200

8"

71

89

295

265

8-Φ23

230

188

250

10"

76

114

350

320

12-Φ23

280

224

300

12"

83

114

400

368

12-Φ23

310

254

350

14"

92

127

460

428

16-Φ23

310

288

400

16"

102

140

515

482

16-Φ25

310

320

450

18"

114

152

565

532

20-Φ25

380

350

500

20"

127

152

620

585

20-Φ25

380

388

600

24"

154

178

725

685

20-Φ30

450

440

700

28"

165

229

840

800

24-Φ30

450

488

800

32"

190

241

950

905

24-Φ34

450

572

900

36"

203

241

1050

1005

28-Φ34

560

628

1000

40"

216

300

1160

1115

28-Φ36

560

698

1200

48"

254

360

1380

1325

32-Φ39

560

810

1400

56"

279

390

1590

1525

36-Φ42

600

940

PRESSURE

DIA

INCH

L-A

L-B

D1

D2

Z-Φd

D0

H1

PN16

40

1-1&sol;2"

33

33

100

85

4-Φ18

140

76

50

2"

43

43

125

100

4-Φ18

140

85

65

2-1&sol;2"

46

46

145

120

4-Φ18

160

95

80

3"

46

64

160

135

8-Φ18

160

110

100

4"

56

64

180

155

8-Φ18

180

122

125

5"

64

70

210

185

8-Φ18

180

138

150

6"

70

76

240

210

8-Φ23

230

158

200

8"

71

89

295

265

12-Φ23

230

188

250

10"

76

114

355

320

12-Φ25

280

224

300

12"

83

114

410

375

12-Φ25

310

254

350

14"

92

127

470

435

16-Φ25

310

288

400

16"

102

140

525

485

16-Φ30

310

320

450

18"

114

152

585

545

20-Φ30

380

350

500

20"

127

152

650

608

20-Φ34

380

388

600

24"

154

178

770

718

20-Φ41

450

440

700

28"

165

229

840

788

24-Φ41

450

488

800

32"

190

241

950

898

24-Φ39

450

572

900

36"

203

241

1050

998

28-Φ39

560

628

1000

40"

216

300

1170

1110

32-Φ48

560

698

1200

48"

254

360

1390

1325

36-Φ48

560

810

1400

56"

279

390

1590

1525

36-Φ48

600

940

1600

64"

318

440

1820

1750

40-Φ58

600

1060

PRESSURE

DIA

INCH

L-A

L-B

D1

D2

Z-Φd

D0

H1

PN25

40

1-1&sol;2"

33

33

110

85

4-Φ18

140

76

50

2"

43

43

125

100

4-Φ18

140

85

65

2-1&sol;2"

46

46

145

120

8-Φ18

180

95

80

3"

46

64

160

135

8-Φ18

180

110

100

4"

56

64

190

160

8-Φ23

230

130

125

5"

64

70

220

188

8-Φ25

230

148

150

6"

70

76

250

218

8-Φ25

280

165

200

8"

71

89

310

278

12-Φ25

280

198

250

10"

76

114

370

332

12-Φ30

310

234

300

12"

83

114

430

390

16-Φ30

380

266

350

14"

92

127

490

448

16-Φ34

380

302

400

16"

102

140

550

505

16-Φ34

380

338

450

18"

114

152

600

555

20-Φ34

450

365

500

20"

127

152

660

610

20-Φ41

450

402

600

24"

154

178

770

718

20-Φ41

560

448

700

28"

165

229

875

815

24-Φ48

560

498

800

32"

190

241

990

930

24-Φ48

600

580

900

36"

203

241

1090

1025

28-Φ54

600

640

1000

40"

216

300

1210

1140

28-Φ58

640

718

1200

48"

254

360

1420

1350

32-Φ58

640

890

1400

56"

279

390

1640

1560

36-Φ65

640

1010

PRESSURE

DIA

INCH

L-A

L-B

D1

D2

Z-Φd

D0

H1

PN40

40

40

1-1&sol;2"

33

33

110

85

4-Φ18

140

50

50

2"

43

43

125

100

4-Φ18

140

65

65

2-1&sol;2"

46

46

145

120

8-Φ18

180

80

80

3"

46

64

160

135

8-Φ18

110

100

100

4"

56

64

190

160

8-Φ23

130

125

125

5"

64

70

220

188

8-Φ25

148

150

150

6"

70

76

250

218

8-Φ25

165

200

200

8"

71

89

320

282

12-Φ30

198

250

250

10"

76

114

385

345

12-Φ34

234

300

300

12"

83

114

450

408

16-Φ34

266

350

350

14"

92

127

510

465

16-Φ34

302

400

400

16"

102

140

585

535

16-Φ41

338

450

450

18"

114

152

610

560

20-Φ41

365

500

500

20"

127

152

670

612

20-Φ48

402

600

600

24"

154

178

795

730

20-Φ54

448

700

700

28"

165

229

900

835

24-Φ54

498

800

800

32"

190

241

1030

960

24-Φ58

580

---OVERALL RANGE VALVES SELECTION---

We offer full line of power plant valves includes gate valve&comma; globe valve&comma; check valve&comma; forged steel valves and preheater valves&period; In addition&comma; our valves can be custom engineered to perform specific functions for our customers' unique requirement&period;

---QUALITY CONTROL---

Throughout the years&comma; HZVALVE has developed its Quality System which is an integral part of our manufacturing policy&period; Our primary goal is to provide products that meet and exceed market standards&period; In this sense&comma; HZVALVE is an ISO-9001 Audited and Certified Company that has achieved major certifications worldwide&period; Our system consists of a rigorous quality control as well as the selection of raw materials from approved vendors&period; Control over our manufacturing process is vital&period; Serial numbers allow HZVALVE to monitor and trace fabrication processes along with the materials of components&period;

HZVALVE owned independent quality department with over 25 experienced inspectors&period; Our target is to cover all vital point including material&comma; procession&comma; assembling&comma; testing and package for overall quality controlling and supervision&period; We keep the understanding that the high quality products create more value to customers&period;

---TECHNICAL SERVICE---

HZVALVE offers professional technical support and efficient solutions to customers covers presales and after-sales which help customers to meet design requirement and maximize the investment returns&period;The basic service includes&colon;

-Model selection including valves and PRDS&period;-Technical plans including of calculation sheet and design basis&period;-Technical drawing&sol;sketch confirmation&period;-Critical working condition analysis and solutions-Custom-design to special requirement&period;-Intime feedback and clarification to customer technical questions&period;-Replacement and spare-parts suggestions&period;-Recommendations of actuators or other device needed&period;-Installation and layout instruction&period;-Maintenance and operation suggestions&period;-Local engineer training and manual offered&period;-Trouble shooting or other problem solutions&period;

---FAQ---

Q&colon; How is your company&quest;

A&colon; Our company was established in 1958&comma; was National owned company background before&period; Since established&comma; we keep as top leader in studying and manufacturing kinds of kinds of valves which fit for critical working conditions&period; To the date&comma; we are providing market-leading safety valves&comma; services and solutions&comma; for the most challenging applications throughout oil and gas&comma; power&comma; mining&comma; chemical&comma; food and beverage and construction industries&period;

Q&colon; How many empolyee your have and how many value for each year&quest;

A&colon; Company now has nearly 300 employees&comma; more than 100 various professional and technical personnel&comma; and 6 of them have senior title and over 40 with middle level title&period; Our annual output value reaches thirty million US dollars and 40&percnt; export all around world&period;

Q&colon; What technical support we can get&quest;

A&colon; With different working condition from different customer's requested&comma; we will offer custom design for each request whcih help our customer's operations running safely&comma; minimize downtime and enhance lifecycle performance but also in minimal investment cost&period;

Q&colon; Want to know more about quality control&quest;

A&colon; HZVALVE owned independent quality department with over 25 experienced inspectors&period; Our target is to cover all vital point including material&comma; procession&comma; assembling&comma; testing and package for overall quality controlling and supervision&period; We keep the understanding that the high quality products create more value to customers&period;

Q&colon; What's the certificate of company&quest;

A&colon; As the leader valves manufacture&comma; we owned with ISO9001&comma; CE&comma; API and many other else certificate&comma; contact us now for review all certificate we have&period;

Q&colon; What else production range you have&quest;

A&colon; We also provide with desuperheater system&comma; safety valves&comma; high pressure power plant valves&comma; preheater valves and other general valves&period; We are keeping offering overall support to our customer&period;